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AXLE BOX. A

l Patented Jan. Z8, 1890'.

(No Modell.)

C @C m, u ,m m mmm M .4 l B UNITED STATES PATENT OFFICE.

ALFRED ROBBINS, OF ANDOVERSFORD, COUNTY OF GLOUCESTER, ENGLAND.

AxLE-Box.

SPECIFICATION forming part of Letters Patent No. 420,35*?, dated January28, 1890. Application filed July 29, 1889. Serial No. 3191053. ,(Nomodel.) Patented in England November 2, 1888, No. 15,847.

To @ZZ whom it may concern:

Be it known that I, ALFRED RoBBINs, engineer, of Andoversford, in thecounty of Gloucester, in the Kingdom of England, have invented certainnew and useful Improvements in Axle-Boxes, (for which I have receivedprovisional protection in England, dated November 2, 1888, No. 15,847 ofwhich the following is a specification.

The invention has for its object an axlebox for locomotives or otherrailway rollingstock, in which the bearings are adapted to receive moreeifectively than in axle-boxes hitherto constructed the verticalpressure due to the weight of thelocomotive, and the thrust or pull dueto the reciprocating motion of the piston. The bearings of allaxle-boxes are of course subject to wear in course of time, and Iprovide ready means for adjustment.

The invention is best described by aid of the accompanying drawings, inwhich an axlebox is shown adapted for locomotives.

Figure l is a sectional elevation on line A B, Fig. 3; Fig. 2, a frontelevation; Fig. 3, a plan of the axle-box inverted; Fig. 4, a plan ofthe axle-box in its normal position, and-Fig. 5 a detail view showing adevice for preventing the adj Listing-pin from becoming accidentallyunscrewed through vibration.

A is the journal of an axle, andB the casting or body of the axle-boxhaving a recess or cavity, the sides of which are preferably madesloping, but which may be of other suitable shape, if desired. Into thisrecess the brasses C C, having sides of corresponding inclination orshape, are placed, and they are prevented from shaking loose by dowelsor studs D. The brasses O C have flanges E, extend` ing the whole orpart of their length, for keeping them in place in the body B.

The division between the two brasses C O is preferably placedvertically, not along the vertical center line of the axle A, but indifferent planes equidistant on either side of the said center line, andpreferably at a distance therefrom equal to about half the radius of thejournal. By making the division in this way a fair and unbroken surfaceis provided both for the vertical pressure due to the weight of thelocomotive and for the thrust or pull due to the reciprocating motion ofthe piston.` In' some cases the divid- 'ing-line may be perpendicular tothe resultant directions of the two pressiires--that is, on or about theline o x or a line at right angles thereto, or in other suitableposition.

In the drawings the opposing faces of the brasses are shown abuttingagainst each other; but, if desired, insertion or packing pieces may beinserted between them and the top faces of the brasses C and the body A.

F is a keeper or cap, and G are adjustingscrews adapted to keep thebrasses in position or press them closer together when the journal orbrasses have become worn. In the alternative arrangement illustrated inFig. 5 a cheese-headed screw II is employed, having its head Hush withthe surface of the keeper F, and prevented from becoming accidentallyunscrewcd through vibration by a small countersunk retaining-screw I.

Other securing devices may be employed instead of the screws G, such asbolts and nuts, or studs and cotters, &c.

To take up wear dueto the rotation of the journal A and the pressureshereinbefore referred to, the brasses G are removed from the box andsome metal is taken off one or both of their abutting-faces, and alsofrom their top sides. The brasses are then replaced and adj usted by thekeeper F and the screws G. If packing or insertion pieces are employed,the brasses need not be removed, but the insertion-strips are taken out,thinner' ones in serted, and the keeper F screwed up.

I declare that what I claim isl. In an axle-box for locomotives, a pairof bearing-brasses surrounding the axle, having their faces abuttingabove and below the same upon opposite sides of the vertical centralplane of the axle and in planes approximately parallel thereto,substantially as described.

2. In an axle-box, a pair of bearing-brasses having their abutting faceslocated on each side of and at a suitable distance from the verticalcentral plane of the axle in planes approximately parallel to the'saidvertical plane, and having also their exterior sides inclined, asdescribed, for the purpose of adjustment within Vacorrespondingly-inclined recess in the axle-box;

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3. In combination, the body B, having a recess provided with slopingsides, the axle A, bearing-brasses surrounding the axle and havingsloping sides provided with anges E to 5 fit the recess in the body B, acap, as F, and adjusting-screws for said cap, whereby the wear on theaxle and bearing-brasses may be 3 taken up.

In testimony whereof I have signed my name to this specification in t-hepresence of 1o two subscribing Witnesses.

ALFRED ROBBINS. Witnessem GEO. C. DYMOND, l-l. P. SHooBRIDGE.

